In The Land Before Time (R): The Big Freeze, a thrilling escapade awaits as snow falls in the Valley for the first time, puzzling everyone. It's not long before the fluffy white flakes begin threatening the dinosaurs' survival. Littlefoot and his friends become more worried about their best friend Spike after he decides to join a visiting Stegosaurus herd on their journey to escape the freeze. When Ducky secretly follows him to the mysterious beyond, Littlefoot, Cera and Petrie decide to brave the icy weather to bring back their missing friends. Know-it-all Mr. Thicknose insists on going along and soon discovers he has lessons to learn from the young ones.